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Murnan Modified Motors

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Old 08-24-2005, 01:56 PM
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Originally Posted by King Nitro
Who is this Murnan modifieds guy?Hmmm... Calls himself,"Grinder" Whats he do to these motors?Open them up and get out the dremel tool and start grinding? Seems all he knows how to do is make his own gears "GRIND"!
Uriah,Im just busting your chops man.Its me Steve Pitts.I got the bug again and have made a few purchases to get back racing again.It want be long now.See you guys soon.
It's great to hear from you again Steve, I knew you would be back. So, what's the new ride? Knowing you it will be something exotic. I have been looking into the Serpent 960. I got a chance to see and examine one a while back, and it is awesome. Steve call me. 7703789669.
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Old 09-11-2005, 10:22 PM
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I think the Lakeland track has close for the time being. At least that's whats on the web site.

http://testfly.0catch.com/sunshine%20bandits/srcar.html

Please, let me know if I'm wrong on this as I was planning to make a couple of races there myself.
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Old 09-12-2005, 10:03 AM
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Originally Posted by Striker
I think the Lakeland track has close for the time being. At least that's whats on the web site.

http://testfly.0catch.com/sunshine%20bandits/srcar.html

Please, let me know if I'm wrong on this as I was planning to make a couple of races there myself.
From what I understand from the Florida crew is that it is closed until further notice.
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Old 09-12-2005, 04:22 PM
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They had to take the track down and no plans on a new location
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Old 09-29-2005, 08:39 AM
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NEW www.murnanmodified.com website!!!!!!!
Check it out!!!!!
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Old 09-29-2005, 02:47 PM
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what do you guys think of the os motors? i see that there being modified now.
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Old 09-29-2005, 04:03 PM
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Originally Posted by moot
what do you guys think of the os motors? i see that there being modified now.
The OS TZ is a very reliable and easy to tune engine. The TZ is not as fast as the modified Novarossi or Sirio Evo3, but it's close... and almost $100 cheaper. The TZ has a very linear powerband with great punch off the line, and great midrange. The TZ just does not seem as happy to rev as the Novarossi's, and especially the Sirio.
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Old 09-30-2005, 10:33 PM
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Originally Posted by Grinder
The OS TZ is a very reliable and easy to tune engine. The TZ is not as fast as the modified Novarossi or Sirio Evo3, but it's close... and almost $100 cheaper. The TZ has a very linear powerband with great punch off the line, and great midrange. The TZ just does not seem as happy to rev as the Novarossi's, and especially the Sirio.
Grinder how is your modded version of the OS TZ compared to your modded novas and evo3?

thanks jason!
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Old 10-01-2005, 12:04 AM
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Hey Uriah, will you be modding the N12LL3 long stroke Novarossi engine?

p.s. on your website, yo describe the EVO 3 Sirio as "a missile"? Do they also blow up like one or do they hold up OK?

p.s.s Faster than the Awesome Murman X12??
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Old 10-01-2005, 04:05 AM
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Originally Posted by jscamry
Grinder how is your modded version of the OS TZ compared to your modded novas and evo3?

thanks jason!
Hi. The modified TZ is almost as fast as the Nova and Sirio, but not quite. Seems to lack the top speed of the Italian engines.
Rody, about the long stroke. I can't seem to get the power that I want out of the long stroke. I have been testing the engine for a few months now, and the short stroke (LS) is faster on the track than the long stroke, I tested stock and modified with the same results (short stroke faster). I tested the Rex LR3 which is the same as the N12LL3. The engine is supposed to have more "bottom end", but I can't seem to find it. The engine is not slow by any means, just not modified LS fast or Evo3 fast. I will say that the long stroke powerband feels more linear than the shorter stroke engine.
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Old 10-04-2005, 03:39 PM
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YGPM Grinder
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Old 10-04-2005, 03:47 PM
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Grinder,
When you ran the Mega ZX 12 a while back did it have good bottom end power? Second thing how did you shim it for 30%? I have all three shims in mine right now.
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Old 10-04-2005, 04:45 PM
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Uriah,

It seems that most of your work is around .12 engines (and they are ballistic). How much experience do you have with .21 onroads?

Thanks,

John
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Old 10-04-2005, 05:27 PM
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LOL looking for more power
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Old 10-05-2005, 03:47 AM
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Originally Posted by quietstorm76
Grinder,
When you ran the Mega ZX 12 a while back did it have good bottom end power? Second thing how did you shim it for 30%? I have all three shims in mine right now.
The Mega ZX12 has great bottom end power, the most I have seen from a stock engine. The problem I had was it was almost impossible to keep it tuned, and it blew a rod within 2 gallons ( I hear this was longer than ususal). I never checked the head clearance, but I added one .10 mm shim to the engine before I ran it, seemed to work fine. The .21 Mega is slow and fragile.
Jrabbito I also modify .21 engines. I've done a few.

Look, I got the power.
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